/*===========================================================================*\
*                                                                           *
*                               OpenMesh                                    *
*      Copyright (C) 2001-2005 by Computer Graphics Group, RWTH Aachen      *
*                           www.openmesh.org                                *
*                                                                           *
*---------------------------------------------------------------------------* 
*                                                                           *
*                                License                                    *
*                                                                           *
*  This library is free software; you can redistribute it and/or modify it  *
*  under the terms of the GNU Library General Public License as published   *
*  by the Free Software Foundation, version 2.                              *
*                                                                           *
*  This library is distributed in the hope that it will be useful, but      *
*  WITHOUT ANY WARRANTY; without even the implied warranty of               *
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU        *
*  Library General Public License for more details.                         *
*                                                                           *
*  You should have received a copy of the GNU Library General Public        *
*  License along with this library; if not, write to the Free Software      *
*  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                *
*                                                                           *
\*===========================================================================*/


//=============================================================================
//
//  Implements an reader module for OBJ files
//
//=============================================================================


#ifndef __OBJREADER_HH__
#define __OBJREADER_HH__


//=== INCLUDES ================================================================


#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <stdio.h>

#include <Core/System/config.hh>
#include <Core/Utils/SingletonT.hh>
#include <Core/IO/importer/BaseImporter.hh>
#include <Core/IO/reader/BaseReader.hh>


//== NAMESPACES ===============================================================


namespace OpenMesh {
	namespace IO {


		//== IMPLEMENTATION ===========================================================


		/** 
		Implementation of the OBJ format reader.
		*/
		class _OBJReader_ : public BaseReader
		{
		public:

			_OBJReader_();

			virtual ~_OBJReader_() { }

			std::string get_description() const { return "Alias/Wavefront"; }
			std::string get_extensions()  const { return "obj"; }

			bool read(const std::string& _filename, 
				BaseImporter& _bi, 
				Options& _opt);

		private:

#ifndef DOXY_IGNORE_THIS
			class Material
			{
			public:

				Material() { cleanup(); }

				void cleanup()
				{
					Kd_is_set_ = false;
					Ka_is_set_ = false;
					Ks_is_set_ = false;
					////////////////////////////RADIOSITY MOD////////////////////////////////
					illum_is_set_ = false;
					////////////////////////////RADIOSITY MOD////////////////////////////////
					Tr_is_set_ = false;
				}

				bool is_valid(void) const 
					////////////////////////////RADIOSITY MOD////////////////////////////////
				{ return Kd_is_set_ || Ka_is_set_ || Ks_is_set_ || illum_is_set_ || Tr_is_set_; }
				////////////////////////////RADIOSITY MOD////////////////////////////////

				bool has_Kd(void) { return Kd_is_set_; }
				bool has_Ka(void) { return Ka_is_set_; }
				bool has_Ks(void) { return Ks_is_set_; }
				////////////////////////////RADIOSITY MOD////////////////////////////////
				bool has_illum(void) { return illum_is_set_; }
				////////////////////////////RADIOSITY MOD////////////////////////////////
				bool has_Tr(void) { return Tr_is_set_; }

				void set_Kd( float r, float g, float b ) 
				{ Kd_=Vec3f(r,g,b); Kd_is_set_=true; }

				void set_Ka( float r, float g, float b ) 
				{ Ka_=Vec3f(r,g,b); Ka_is_set_=true; }

				void set_Ks( float r, float g, float b ) 
				{ Ks_=Vec3f(r,g,b); Ks_is_set_=true; }

				////////////////////////////RADIOSITY MOD////////////////////////////////
				void set_illum( int n )
				{ illum_=n; illum_is_set_=true; }
				////////////////////////////RADIOSITY MOD////////////////////////////////

				void set_Tr( float t )
				{ Tr_=t;            Tr_is_set_=true; }

				const Vec3f& Kd( void ) const { return Kd_; }
				const Vec3f& Ka( void ) const { return Ka_; }
				const Vec3f& Ks( void ) const { return Ks_; }
				////////////////////////////RADIOSITY MOD////////////////////////////////
				const int illum( void ) const { return illum_; }
				////////////////////////////RADIOSITY MOD////////////////////////////////
				float  Tr( void ) const { return Tr_; }

			private:

				Vec3f Kd_;         bool Kd_is_set_; // diffuse
				Vec3f Ka_;         bool Ka_is_set_; // ambient
				Vec3f Ks_;         bool Ks_is_set_; // specular
				////////////////////////////RADIOSITY MOD////////////////////////////////
				int illum_;		   bool illum_is_set_; //illumination
				////////////////////////////RADIOSITY MOD////////////////////////////////
				float Tr_;         bool Tr_is_set_; // transperency
			};
#endif

			typedef std::map<std::string, Material> MaterialList;

			MaterialList materials_;

			bool read_mtl( FILE* _in );

		private:

			bool read(FILE* _in, BaseImporter& _bi, Options& _opt);

			std::string path_;

		};


		//== TYPE DEFINITION ==========================================================


		extern _OBJReader_  __OBJReaderInstance;
		_OBJReader_& OBJReader();


		//=============================================================================
	} // namespace IO
} // namespace OpenMesh
//=============================================================================
#endif
//=============================================================================
